NF M87-226-2*NF EN ISO 10427-2:2004 Petroleum and natural gas industries - Equipment for well cementing - Part 2 : centralizer placement and stop-collar testing
2004NF M87-226-2*NF EN ISO 10427-2:2004 Petroleum and natural gas industries - Equipment for well cementing - Part 2 : centralizer placement and stop-collar testing